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Finding the Third Proportional to 43,974 and 68,138

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Solution

The third proportional to 43,974 and 68,138 is: 105,580.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,974 : 68,138 = 68,138 : x
  2. Step 2: Convert to fraction form
    43,974/68,138 = 68,138/x
  3. Step 3: Cross multiply
    43,974x = 68,138 × 68,138
  4. Step 4: Simplify right side
    43,974x = 4,642,787,044
  5. Step 5: Solve for x
    x = 4,642,787,044/43,974
  6. Step 6: Final answer
    x = 105,580.28

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.